History of Iran

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History of Iran
The Gate of All Nations in Fars
Prehistoric period BCE / BC Baradostian culture c. 36,000–18,000 Zarzian culture c. 20,000–10,000 Shulaveri–Shomu culture c. 6000–5000 Zayandeh River Culture c. 6th millennium Dalma culture c. 5th millennium
Ancient period Kura–Araxes culture 3400–2000 Helmand culture/Jiroft culture c. 3300–2200 Proto-Elamite 3200–2700 Lullubi Kingdom/Zamua c. 3100-675 Elam 2700–539 Marhaši c. 2550-2020 Oxus Civilization c. 2400–1700 Akkadian Empire 2400–2150 Kassites c. 1500–1155 Avestan period c. 1500–500 Neo-Assyrian Empire 911–609 Urartu 860–590 Mannaea 850–616 Zikirti 750-521 Saparda 720-670
Imperial period Median Empire 678–550 BC Scythian Kingdom 652–625 BC Anshanite Kingdom 635 BC–550 BC Neo-Babylonian Empire 626 BC–539 BC Sogdia c. 6th century BC–11th century AD Achaemenid Empire 550 BC–330 BC Kingdom of Armenia 331 BC–428 AD Atropatene c. 323 BC–226 AD Kingdom of Cappadocia 320s BC–17 AD Seleucid Empire 312 BC–63 BC Kingdom of Pontus 281 BC–62 BC Fratarakas 3rd-century BC–132 BC Parthian Empire 247 BC–224 AD Elymais 147 BC–224 AD Characene 141 BC–222 AD Kings of Persis 132 BC–224 AD Indo-Parthian Kingdom 19 AD–224/5 Paratarajas 125–300 Sasanian Empire 224–651 Zarmihrids 6th century–785 Qarinvandids 550s–11th century
Medieval period CE / AD Rashidun Caliphate 632-661 Umayyad Caliphate 661–750 Abbasid Caliphate 750–1258 Dabuyids 642–760 Bavandids 651–1349 Masmughans of Damavand 651–760 Baduspanids 665–1598 Justanids 791 – 11th century Alid dynasties 864 – 14th century Tahirid dynasty 821–873 Samanid Empire 819–999 Saffarid dynasty 861–1003 Ghurid dynasty pre-879 – 1215 Sajid dynasty 889–929 Sallarid dynasty 919–1062 Ziyarid dynasty 930–1090 Ilyasids 932–968 Buyid dynasty 934–1062 Rawadid dynasty 955–1070 Hasanwayhids 959–1095 Ghaznavid dynasty 977–1186 Annazids 990/1–1117 Kakuyids 1008–1141 Nasrid dynasty 1029–1236 Shabankara 1030–1355 Seljuk Empire 1037–1194 Khwarazmian dynasty 1077–1231 Eldiguzids 1135–1225 Atabegs of Yazd 1141–1319 Salghurids 1148–1282 Hazaraspids 1155–1424 Pishkinid dynasty 1155–1231 Khorshidi dynasty 1184-1597 Qutlugh-Khanids 1223-1306 Mihrabanids 1236–1537 Kurt dynasty 1244–1396 Ilkhanate Empire 1256–1335 Chobanid dynasty 1335–1357 Muzaffarid dynasty 1335–1393 Jalayirid Sultanate 1337–1376 Sarbadars 1337–1376 Injuids 1335–1357 Afrasiyab dynasty 1349–1504 Mar'ashis 1359–1596 Timurid Empire 1370–1507 Kar-Kiya dynasty 1370s–1592 Qara Qoyunlu 1406–1468 Aq Qoyunlu 1468–1508
Early modern period Safavid Iran 1501–1736 (Hotak dynasty) 1722–1729 Afsharid Iran 1736–1796 Zand dynasty 1751–1794
Modern period Qajar Iran 1789–1925 Pahlavi Iran 1925–1979
Contemporary period Iranian Revolution 1979 Interim Government 1979 Islamic Republic 1979–present
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The history of Iran (or Persia, as it was known in the Western world) is intertwined with Greater Iran, a sociocultural region spanning from Anatolia to the Indus River and from the Caucasus to the Persian Gulf. Central to this area is modern-day Iran, which covers the bulk of the Iranian plateau.

Iran is home to one of the world's oldest continuous major civilizations, with historical and urban settlements dating back to 4000 BC.^[1] The western part of the Iranian plateau participated in the traditional ancient Near East with Elam (in Ilam and Khuzestan), Kassites (in Kuhdesht), Gutians (in Luristan) and later with other peoples such as the Urartians (in Oshnavieh and Sardasht) in the southwest of Lake Urmia^[2][3][4][5] and Mannaeans (in Piranshahr, Saqqez and Bukan) in the Kurdish area.^{[6][7][8][9][10][11][12][13][14]} Georg Wilhelm Friedrich Hegel called the Persians the "first Historical People".^[15] The Iranian empire began in the Iron Age with the rise of the Medes, who unified Iran as a nation and empire in 625 BC.^[16] The Achaemenid Empire (550–330 BC), founded by Cyrus the Great, was the largest empire the world had seen, spanning from the Balkans to North Africa and Central Asia. They were succeeded by the Seleucid, Parthian, and Sasanian empires, who governed Iran for almost 1,000 years, making Iran a leading power once again. Persia's arch-rival during this time was the Roman Empire and its successor, the Byzantine Empire.

Iran endured invasions by the Macedonians, Arabs, Turks, and Mongols. Despite these invasions, Iran continually reasserted its national identity and developed as a distinct political and cultural entity. The Muslim conquest of Persia (632–654) ended the Sasanian Empire and marked a turning point in Iranian history, leading to the Islamization of Iran from the eighth to tenth centuries and the decline of Zoroastrianism. However, the achievements of prior Persian civilizations were absorbed into the new Islamic polity. Iran suffered invasions by nomadic tribes during the Late Middle Ages and early modern period, negatively impacting the region.^[17] Iran was reunified as an independent state in 1501 by the Safavid dynasty, which established Shia Islam as the empire's official religion,^[18] marking a significant turning point in the history of Islam.^[19] Iran functioned again as a leading world power, especially in rivalry with the Ottoman Empire. In the 19th century, Iran lost significant territories in the Caucasus to the Russian Empire following the Russo-Persian Wars.^[20]

Iran remained a monarchy until the 1979 Iranian Revolution, when it officially became an Islamic republic on 1 April 1979.^[21][22] Since then, Iran has experienced significant political, social, and economic changes. The establishment of the Islamic Republic of Iran led to the restructuring of its political system, with Ayatollah Khomeini as the Supreme Leader. Iran's foreign relations have been shaped by the Iran-Iraq War (1980-1988), ongoing tensions with the United States, and its nuclear program, which has been a point of contention in international diplomacy. Despite economic sanctions and internal challenges, Iran remains a key player in Middle Eastern and global geopolitics.